5-day weather forecast Reykjavík 27-05-2026

Weather forecast Reykjavík tomorrow 27.05.2026: patchy rain possible, temperature from 7 °C to 8 °C.

Precipitation probability 100%. Wind up to 8.19 m/s (gusts 10.72 m/s). Air humidity 70–81%, atmospheric pressure 766–767 mm Hg, UV index up to 2.4.

Sunrise 03:35
Sunset 23:14

Waxing Gibbous90% illuminated
Moonrise 18:49 · Moonset 02:40

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Table

← Tue, May 26

Wed, May 27, 2026

Thu, May 28 →

Forecast from 7 °C to 8 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	7
Precipitation (mm/hr)	0.08	0.09	0.12	0.11	0.15	0.17	0.19	0.17	0.13	0.11	0.07	0.07	0.06	0.07	0.08	0.06	0.04	0.04	0.03	0.03	0.04	0.05	0.04	0.06

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	100	100	96	100	98	91	91	91	93	93	82	94	90	96	85	67	65	78	55	51	51	77	78	100
Rain chance (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	64	87	76	63	87	100	87	100

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	7.69	8	8	7.81	8	8	8.19	8	7.81	8.11	7.89	7.89	7.81	7.61	7.31	7	6.61	5.89	5.5	5.11	4.69	4.31	3.61	3.39
Wind gust (m/s)	10.06	10.33	10.42	10.22	10.56	10.56	10.72	10.31	9.86	10.14	9.89	9.81	9.67	9.39	9.08	8.72	8.14	7.42	6.86	6.56	6.06	5.61	4.78	4.5
Wind direction (°)	SW 216°	SSW 209°	SSW 207°	SSW 207°	SSW 206°	SSW 207°	SSW 207°	SSW 211°	SSW 212°	SW 215°	SW 214°	SW 215°	SW 216°	SW 217°	SW 218°	SW 219°	SW 219°	SW 222°	SW 218°	SW 215°	SSW 211°	SSW 206°	SSW 199°	SSW 193°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	78	80	81	81	81	81	81	80	78	77	74	73	73	73	73	73	71	71	70	71	72	74	75	77

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	767	767	767	766	766	766	766	766	766	766	766	766	767	767	767	767	766	766	766	766	766	766	766	766

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0.1	0.2	0.4	0.8	1.4	2.2	2.3	2.2	2.4	1.9	1.8	1.3	0.8	0.7	0.3	0.1	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	4.5	4	4.4	4.5	4.2	4.2	4.1	4	4	3.9	3.7	3.6	3.7	3.6	3.4	3.4	3.5	3.4	3.5	3.7	4	3.7	3.9	4.1
PM10 (µg/m³)	8.9	9.9	10.7	11.2	11.5	11.2	11.8	11.3	9.8	8.9	8.5	8.4	7.8	6.7	5.8	5.4	5.8	6.1	6.2	6.1	6.6	5.7	5.6	6.1
Ozone (O₃) (µg/m³)	78	79	79	79	79	80	78	77	77	77	76	76	74	73	71	71	70	67	65	64	63	62	66.2	68.5
NO₂ (µg/m³)	2	2	2	2	2	2.2	2.1	2.1	2.2	2.2	2.2	2.2	2.2	2.2	2.4	2.5	2.6	3.2	3.8	4.5	5.2	5.6	4.9	3.8
SO₂ (µg/m³)	3.8	4	4.1	4.4	4.6	4.4	4.3	4.2	3.9	3.7	3.7	3.7	3.8	3.8	3.8	3.7	3.7	3.9	4.3	4.7	4.8	4.1	4.1	6.7
CO (µg/m³)	124.9	124.9	124.9	124.9	125.9	124.9	125.9	125.9	126.9	126.9	126.9	125.9	124.9	125.9	126.9	126.9	128.9	129.9	132.9	135.9	146.9	156.9	150.1	143.9

← Tue, May 26

Wed, May 27, 2026

Thu, May 28 →

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Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.

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